Machine for swaging or bending sheet metal



Oct. 19 1926.

J. P. PETH MACHINE FOR SWAGING 0R BENDING SHEET METAL Filed Dec. 5. 19232 Sheets-Sheet 1 as??? w xw L do/z n P .I. P. PETH MACHINE FOR SWAGING0R BENDING SHEET METAL Filed Dec. 5. 1923 2 Sheets-Sheet 2 7 LTO/ZYLP WPaid Patented Oct. 19, 1926.

UNITED srArEs 101m]?! rn'rn, or cI-Ircaeo, ILLINOIS.

MACHINE noR'swliGINe oniennnme SHEET METAL.

Apphcatibn filed December 551923. Serial No. 678,782.

laredgeota'sheet metal portion, of some article of manufacture, such asan incandescent-electric lampbulb, thereby to secure-the sheet metalportion in place.

More specifically considered, the object of the invention is to provide,a machine e pecially adapted for doing work of this kind,

inconnection with the manufacture of electric lamp bulbs, whereby thebulb is heldstatioiiary while thework is being done," so thatthefilament of the' lamp; will-not be broken,

and whereby certain other advantages will be obtained in connectionwiththemanufacture t electrlc lamp bulbs or simllar artlcles,

, as will hereinafter more fully appear.

-It is'alsouanobject to provide certain de:

tails and features of construction tending to increase thegeneral'etliciency and the desirability of a sheet metal bending, orcrimping'or swaging machine of thiscparticular character,

To the foregoing and "other useful ends theinventionconsists in mattershereinafter se'trforthand'claImed andshown 1n the 1&6-

,companying drawings in which ,fFigure 1 is aside elevation of a sheetmetal bending or crimping or swaging machine embodying the principles otthe in vention. i

Figure 2 is .;an enlarged vertical section of said machine.

Figure 3 is a horizontal section on line 33 In Figure 2.

Figure 4 is an enlarged section of the chuck for holding the electriclamp bulb,

showing the operation ofbending or swaging the edge of the sheet metalsleeve on the baseofthe bulb, thereby to secure this-sleeve in place.

prises a'suitable body 1 having avertical tubular member 2 therein, saidtubular men her having; an enlarged portion?) at its upper end, whichportion is provided with a freely rotated pulley 4fhavinp; a. flange 5at its "upper end. This pulleyrests on the base As thus illustrated, theinvention con or body 1, as shown, and the tube 2 is lined in said body1, and a vertically movable stem G Jis movable up and down in thetubular member 2, by means'of a chain? attached to the lower end thereofand leading to a foot treadle (not shown) or any other suitable means. Aspring 8 is suitably applied to hold the stem 6 in normally raisedposition, and the upper portion'of this stem 6 is enlarged to form achuck 9 having vertical slots 10 as shown. The screw member 11 isinserted downward in the chuck, as shown, to receive the lower end ofthe base'of the lamp bulbybeing adjustable for lamps of different sizes.The inner edge of the en largement 3 is beveled at 12, and the chuck 'isbeveled at 13, and theresult is that when the stem 6 is pulled downwardthe chuck is contracted or pushed inward by thebevel 1.2, so that-thechuck will grip the base of thelamp bulb as shown in Figured, thussecurely holding the lamp in position,

The rotating flange 5 is provided with arms ll pivoted thereon at 15,these armshaving springs 16 to normally'hold each arm against its stop17, these stops being adjustable to regulate the positions of the arms,whereby said arms are tangentially arranged. Each arm has a bendingorswaginp; roll 18 to engagethe' brass sleeve 19 of thelamp bulb, and eacharmhas :2 more or less conical roller 20 for engagement with the groove21 on the bottom of the plate which latter is supported by springs 23arranged on the vertically disposed pins or rods 24 which are mounted toslideup and down in the body 1, in a manner that will be 3 lowerend onthe body of the machine. This plate 27 has a central opening 30 throughwhich to insert the lamp bulb into the chuck, and has its other endprovided with a chain 31 leading downward to a foot'treadle, or

sense other means, for pulling the plate downward. Bearing points 32 areprovided on the bottom of the plate 27 to bear upon the top of the plate22, thereby to force the latter downward. The relative arrangement 'suchthat the groove 21 strikes the rollers 20 and thereby forces the arms ll around to the position shown in dotted lines in Figure 3, thereby tocommunicateor transmit power to force the swaging means 18 positivelyagainst the sheet metal. This moves the crimping or swagingrolls 18 intooperative position, and causing the upper circular edge of the sleeve 19to be bent or swaged over as shown in Figure 4, thus securing the brasssleeve 19 on the base of the lamp in the desired manner, the plate 27,01" course, is held against rotation, so that the controlling means donot rotate with the swaging means. It will be seen that the rolls 18have a suitable peripheral formation for this purpose, as shown inFigure 4, so that the upper edge of the portion 19 is bent or swagedover and turneddown to form an inwardly extending fiat flange on thebase of the lamp.

When the plate 27 is released, the springs 23 will-raise the plate 22,and the arms 14 will assume their normal positions, so that the rolls18will disengage the amp bulb. Then when the pull on the chain 7 isrelaxed, the chuck 9 will release the lamp, and the latter can then beremoved upwardly through the openings and 30, and another lamp can beplaced in the machine for similar treatment.

It will be seen that the lamp is held sta} tionary in a very rigid andsecure manner, and is not rotated or moved around, whereby there is nodanger of breaking the filament of thelamp. The means for swaging orcrimping or spinning over the edge of the b ass sleeve of the lampoperate very quickly and effectively, under manual control, and

t-hepower necessary for driving the pulley 4 can be of any suitablecharacter. When the pull on the chain 7 is relaxed, the spring 8 forcesthe stem 6 upward, .t ius causing the chuck 9 to release the lamp bulb.

The construction shown and described is illustrative of the invention,and it is obvious that the construction can be changed or modified, indifferent ways, without departing from the spirit of the invention. Itwill be seen, for example, that the posts or r11fi2lgl1tSQ l can bearranged in any suitable manner, and that the machine may involve two ormore of these posts, or any suitable number, but for convenience ofillustration I two are shown, in the manner illustrated. It

is also obvious that any suitable or desired number of rolls 18 may beemployed, without departing from the spirit of the inventien.

Spring press-ed elements 33 can be mounted in the body 1, to pressagainst the bottom of the pulley i, to frictionally support the drivingmeans, in order to present .enough friction to stop the pulley promptlywhen the power is disconnected therefrom. These elements 33 yield in adownwarddirection, it will be seen, when a downward pull is exerted onthe chain 7, thus cushioning the action more or less. Also, it will beseen that stops 34 are preferably provided on the top ofthe disk orflange 5 to engage the arms lei, thereby to limit the movement of theswaging rolls 18 toward the work, in a manner that will be readilyunderstood.

'These stops, like the stops 17, are adjustable V positively forcedagainst the articles to be operated upon, by manual pow-er, asexplained, or in any suitable way, and are withdrawn from engagementwith the work by spring power applied in the manner shown and described.

What I claim as my invention is 1. In a machine for bending or swagingsheet metal, the combination ofa holding device to hold the article tobe operated upon, instrumentalities having means to engage the sheetmetal to be operated upon, a rotary support forming drivingmeans torotate said i nstrumentalities, controlling means for said holdingdevice, and controlling means for said instrumentalities, havingengagement therewith but held against rotation, adapted by movementbodily toward metal to be swaged or bent, springs for bold ing said armsnormally away from the work, stops to limit the movement of the swagiugrolls away from the work, conical rolls on said arms, a plate overlyingsaid arms and provided with a circular groove to engage said conicalrolls to force said swaging rolls into engagement with the work, andmeans for forcing said plate downward, forming the controller therefor.

2. In a machine for bending or swaging sheet metal, the combination of aholding device to hold the article to be operated upon,instrumentalities having means to engage the sheet metal to be operatedupon, a rotary support forming driving means to rotate saidinstrumentalities, controlling means for said holding device, andcontrol.

ling meansfor, said instrumentalities, having engagement therewithbutheld against'rotation, adaptedby movement bodily toward said article andsaid engaging means to transmit motion to positively forcesaidinstrumentalities against the sheet metal,

whereby said instrumentalities may be rendered operative or inoperativeat will, while the' machine is in operation, said holding devicecomprising a chuck having means therein which are movable axially togrip the article'to be'operated upon, whereby the article is heldstationary, and said chuck having an outer stationary portion whichforms the axis of rotation for said rotating instrumentalities whichperform the swaging operation, and for said driving means.

3. In a machine for bending or swaging sheet metal, the combination ofaholding device to hold the article to be operated upon,instrumentalities having means to engage the sheet metal to be operatedupon, a rotary support forming driving means to rotate saidinstrumentalit-ies, controlling means for said holding device, andcontrolling means for said instrumentalities, having engagementtherewith but held against rotation, adapted by movement bodily towardsaid article and said engaging means to transmit motion to positivelyforce said instrumentalities against the sheet metal, whereby saidinstrumentalities may be rendered operative or inoperative at will,while the machineis in operation, said instruinentalities and drivingmeans therefor comprising a pulley rotatable about said holding deviceas an axle, and swaging rolls movably mounted on said pulley, saidcontrolling means for said instrumentalities overlying said rolls andhaving provisions for causing the rolls to move toward and away from thework.

7 4-. In a machine for bending or swaging sheet metal, the combinationof a holding device to hold the article to be operated upon,instrumentalities having means to engage the sheet metal to be operatedupon, a rotary support forming driving means to rotate saidinstrumentalities, controlling means for said holding device, andcontrolling means for said instrumentalities, having engagementtherewith but held against rotation, adapted by movement bodily toward.

said article and said engaging means to transmit motion to positivelyforce said instrumentalities against the sheet metal, whereby saidinstrumentalities may be rendered operative or inoperative at will,while the'machine is in operation, said holding device comprising achuck adapted and formed to grip the base portion of an electric lampbulb, said last mentioned controlling means having an opening thereinfor said bulb, and said instrumentalities comprising means disposed inposition to engage a sheet metal sleeve 011 the base of the bulb,

at-a point a distance above the lower end oit'saidbase'.

5. In a machine for bending or swaging sheet metal, the combination of aholding device to hold. the article to be operated upon,instrumentalities having meansto'engage the sheet metal to be operatedupon, a rotary support forming driving means to rotate saidinstrumentalities, controlling means for said holding device, andcontrolling meansfor said instrumentalities, having engagement therewithbut held against rotation, adapted by movement bodily toward saidarticle and said engaging means to transmit motion to positively forcesaid instrumentalities against the sheet metal, whereby saidinstrumentalities may be rendered operative or inoperative at will,while the machine is in operation, said holding device comprising achuck for gripping the base portion of an electric lamp bulb, said lastmentioned controlling means having an opening therein for said bulb, andadjustable means in said chuck to engage the lower end of the lamp base,whereby to accurately position the upper portion of the base for theoperation of said instrumentalitics thereon.

6. In a machine for bending or swaging sheet metal, the combination of aholding device to hold the article to be operated upon,instrumentalities having means to engage the sheet metal to be operatedupon, a rotary support forming driving means to rotate saidinstrumentalities, controlling means for said holding device, andcontrolling means for said instrumentalities, having engagementtherewith but held against rotation, adapted by movement bodily towardsaid article and said engaging means to transmit motion to positivelyforce said in strumentalities against the sheet metal, whereby saidinstrumentalities may be rendered operative or inoperative at will,while the machine is in operation, in combination with spring pressedmeans to frictionally support and retard the rotation of said drivingmeans, tending to press said driving means toward said last mentionedcontrolling means.

7. In a machine for bending or swaging sheet metal, the combination of aholding device to hold the article to be operated upon,instrumentalities having means to engage the sheet metal to be operatedupon, a rotary support forming driving means to rotate saidinstrumentalities, controlling means for said holding device, andcontrolling means for said instrumentalities, having engagementtherewithbut held against rotation, adapted by movement bodily towardsaid-article and said engaging means to transmit motion to positivelyforce said instrume ntalities against the sheet metal, whereby saidinstrumentalities may be rendered operative or, inoperative at will,While the machine is in operation, in combination With stops to limitthe movement of said instrumentalities toward the article to be operatedupon, disposed in a plane between saiddriving means and said lastmentioned Controlling means.

8. .A machine for performing Work on articles of manufacture, comprisingengageing means for doing the required Work on the articles, a rotatingtable forming supporting and driving means to revolve said engagingmeans about the articles, controlling instrumentalities movable bodilytoward said driving means and table and engaging means and therebyoperativeto positively force said engaging means against the articles,having engagement therewith but held against rotation and a holder forsaid articles, "having springs between the driving means and thecontrolling 'inst-rumentalities and operative to disengage the engagingmeans from the Work. i

' JOHN P. PETH.,

